Critics often argue the reason behind the Citroen C4 front bumper getting a nickname in the Citroen C4 bumper cover. The nickname prevails because of the performance of the accessory. The accessory bolts onto the front of the car. Many vehicles that can be seen on the road contain various Citroen C4 aftermarket bumper options to focus on bumper styling. The Citroen C4 custom front bumper is made from superior quality hand laid fiberglass and also sometimes from ABS plastic. Absorbing the impact of crashes is what they are installed for. The Citroen C4 carbon fiber front bumper is another one in the league of bumpers that is made from carbon fiber.